NASA tested the Orion spacecraft's parachutes March 16, 2018, at the U.S. Army's Yuma Proving Ground in Arizona.

Credit: James Blair/NASA

NASA will run its final parachute test for the Orion spacecraft today (Sept. 12) as the agency readies Orion for its first uncrewed mission around the moon.

NASA will start coverage of the test at 10:15 a.m. EDT (1415 GMT) on NASA Television and the Orion Facebook page. Viewers can ask questions on social media using the hashtag #AskNASA. You can watch the test here on Space.com, courtesy of NASA TV. Several NASA employees will participate, including Orion program manager Mark Kirasich, astronaut Randy Bresnik and Orion parachute engineers, according to a statement from NASA.

During the procedure at the U.S. Army's Yuma Proving Ground in Arizona, an Orion test capsule will be dropped from a C-17 aircraft from more than 6 miles (9.5 km) high. The test is expected to check out the fitness of 11 parachutes, as well as the mortars and pyrotechnic devices that are supposed to slow the capsule for a safe descent to Earth. [Orion: NASA's Next Spaceship in Pictures]

"To date, such tests have evaluated Orion's parachute performance during normal landing sequences, several failure scenarios and a variety of potential aerodynamic conditions to ensure the safe return of astronauts from deep-space missions," NASA said in the statement.

Orion's first test flight is expected no earlier than 2019, when the spacecraft — riding on top of the Space Launch System — will be launched toward lunar orbit for a two-week mission. While this test flight will be uncrewed, NASA could eventually use Orion for trips beyond low Earth orbit. The agency is working on plans for a Lunar Orbiting Platform Gateway (which deep-space station in orbit around the moon) and has also talked about bringing people to Mars.

Elizabeth Howell is a contributing writer for Space.com who is one of the few Canadian journalists to report regularly on space exploration. She is pursuing a Ph.D. part-time in aerospace sciences (University of North Dakota) after completing an M.Sc. (space studies) at the same institution. She also holds a bachelor of journalism degree from Carleton University. Besides writing, Elizabeth teaches communications at the university and community college level. To see her latest projects, follow Elizabeth on Twitter at @HowellSpace.